Why on Physics meta you neither receive nor lose reputations but on meta stack exchange you do?
On Physics meta:
When someone either upvotes or downvotes one of your questions or answers then your number of reputations is unaffected.
But on meta stack exchange:
When someone upvotes one of your questions or answers then you receive 5 reputations, but when he/she downvotes then you lose 2 reputations.
But why it works like that? Why Physics meta is different than meta stack exchange in this manner?